They don't even need to 'win' in the sense of maxing the benchmark. They can be 20% worse/50% cheaper and many of us (and our managers who approve our token budgets) will be in.
Deepseek is 30x cheaper for input/75x cheaper for output than sonnet on openrouter, and it's not a whole lot worse for many things.
It is enough to kneecap their pricing power to trigger the valuation reset by an order of magnitude and humble them a bit.
Plus there are always infrastructure and hardware providers who want to keep their share of profits and will squeeze Anthropic's margins to deflate their valuation (nvidia, aws, RAM manufacturers, etc)